Answer:
We need a sample size of least 119
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of 
, and a confidence level of 
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of 
.
The margin of error is:
95% confidence level
So 
, z is the value of Z that has a pvalue of 
, so 
.
Sample size needed
At least n, in which n is found when 
We don't know the proportion, so we use 
, which is when we would need the largest sample size.
Rounding up
We need a sample size of least 119
Answer:
3) 
Step-by-step explanation:
x = 3
1) 
2 x 
= 54
2) 
2 x + 5
= 59
3)
(2 x 3
=216
4) 
(3 - 1
= 8
Set each equation equal to zero.
y + 5 = 0
Subtract 5 from both sides.
y = 0 - 5
y = - 5
y - 9 = 0
Add 9 to both sides
y = 0 + 9
y = 9
y = - 5, 9
6x-3x^3. Is what it would work out to be.
Answer:
A) (the first data set)
Step-by-step explanation:
It is the only one that has enough numbers to be represented by the histogram
